Vol. 7, Issue 10, Part G (2025)

A Field experiment entitled, “Effect of biochar and nanourea on growth and yield of soybean.” was conducted during the year 2024-2025 at the Research Farm of Interfaculty Department of Irrigation water Management, Post Graduate Institute, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahilyanagar, Maharashtra, India with an objective of effect of biochar and nanourea application on growth, yield and economics of soybean. The experiment was carried out in randomized block design with thirteen treatment replicated three times and experiment comprises of T_{1 -} absolute control, T₂ - RDF + FYM, T₃ - RDF + Biochar, T₄ - RDF + Nanourea, T₅ - RDF + Biochar + FYM, T₆ - RDF + Biochar + Nanourea, T₇ - RDF + Biochar + Rhizobium, T₈ - RDF + Biochar + FYM + Nanourea, T₉ - RDF + Biochar + FYM + Nanourea + Rhizobium, T₁₀ - 75 % RDN + Biochar + FYM + Nanourea + Rhizobium, T₁₁ - 50 % RDN + Biochar + FYM + Nanourea + Rhizobium, T₁₂ - 25 % RDN + Biochar + FYM + Nanourea + Rhizobium, T₁₃ - 0 % RDN + Biochar + FYM + Nanourea + Rhizobium. The Seed treatment of rhizobium and application of Nanourea @ 50 kg ha^-1 at the time of sowing along with application of biochar @ 5 t ha^-1 + FYM @ 12 t ha^-1 into soil before 15 days of sowing. Soybean crop was planted by hand dibbling at 45 cm × 5 cm spacing. The irrigation was done as per climatological parameter. The result indicated that all the growth and yield contributing character were recorded higher and significantly superior in RDF + Biochar + FYM + Nanourea + Rhizobium. Significantly higher yield of soybean (36.04 q ha^-1) was recorded in RDF + Biochar + FYM + Nanourea + Rhizobium and it was par with 75 % RDN + Biochar + FYM + Nanourea + Rhizobium (34.01 q ha^-1), RDF + Biochar + FYM + Nanourea (33.80 q ha^-1) and 50 % RDN + Biochar + FYM + Nanourea + Rhizobium (33.56 q ha^-1). The same trend was observed in terms of economics. It is concluded that, soil application of 50 per cent recommended dose of nitrogen, 100 per cent phosphorus and potassium (25:75:45 N:P₂O₅:K₂O kg ha^-1) + Nanourea @ 50 kg ha^-1 + Seed treatment of rhizobium @ 25 kg^-1 of seed at the time of sowing along with application of biochar @ 5 t ha^-1 + FYM @ 12 t ha^-1 into the soil before 15 days of sowing recorded significantly higher grain and straw yield of soybean for soil maintenance and economically beneficial.